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Finding the Fourth Proportional to 279,628.94, 385,756.01 and 189,016.54

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Solution

The fourth proportional to 279,628.94, 385,756.01 and 189,016.54 is: 260,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,628.94 : 385,756.01 = 189,016.54 : x
  2. Step 2: Convert to fraction form
    279,628.94/385,756.01 = 189,016.54/x
  3. Step 3: Cross multiply
    279,628.94x = 385,756.01 × 189,016.54
  4. Step 4: Simplify right side
    279,628.94x = 72,914,266,294.41
  5. Step 5: Solve for x
    x = 72,914,266,294.41/279,628.94
  6. Step 6: Final answer
    x = 260,753.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.